EP1882323A1 - Procede de selection de contenus sonores reçus d'un recepteur audio ou audiovisuel et recepteur selectionnant les contenus selon le procede - Google Patents
Procede de selection de contenus sonores reçus d'un recepteur audio ou audiovisuel et recepteur selectionnant les contenus selon le procedeInfo
- Publication number
- EP1882323A1 EP1882323A1 EP06754778A EP06754778A EP1882323A1 EP 1882323 A1 EP1882323 A1 EP 1882323A1 EP 06754778 A EP06754778 A EP 06754778A EP 06754778 A EP06754778 A EP 06754778A EP 1882323 A1 EP1882323 A1 EP 1882323A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- content
- audio
- reproduction
- contents
- receiver
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/56—Arrangements characterised by components specially adapted for monitoring, identification or recognition covered by groups H04H60/29-H04H60/54
- H04H60/58—Arrangements characterised by components specially adapted for monitoring, identification or recognition covered by groups H04H60/29-H04H60/54 of audio
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
- H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/61—Arrangements for services using the result of monitoring, identification or recognition covered by groups H04H60/29-H04H60/54
- H04H60/65—Arrangements for services using the result of monitoring, identification or recognition covered by groups H04H60/29-H04H60/54 for using the result on users' side
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J2200/00—Indexing scheme relating to tuning resonant circuits and selecting resonant circuits
- H03J2200/20—Radio receiver with possibility to choose a station with a certain programme style
Definitions
- the invention relates to a method for selecting sound content broadcast by streams and received by an audio receiver, and a reproducing apparatus reproducing the selected contents according to the method.
- EPG Electronic Program Guides
- these data give information about the broadcast contents such as: title, duration, date and time of broadcast, format, etc.
- the bouquet also includes radio stations.
- the EPG displays the names of the stations and the sound content currently being broadcast and planned. This reception mode allows digital quality during playback, facilities for programming recordings, information on the content for filing in a database, and so on. In this way, the user can develop a list of contents that interest him, and chain their reproductions.
- the signal analysis techniques used in this application make it possible to calculate for each audio content so-called "low level” parameter values. These parameters are for example: the tempo, the energy, the brightness, the envelope, ... They are determined by analysis of the signal either in its numerical form, or in its analog form.
- a technique for indexing audio content is explained in the article "Speech and Language Technologies for audio indexing and retrieval” published in August 2000 in the journal IEEE page 1338 to 1353 of volume 88. The article explains how by signal analysis audio, we can classify the different contents.
- Other articles describe means for calculating low level parameters and possible uses, here are other articles included by reference to the present patent application: • B. Feiten and S. Gunzel, Automatic indexing of a Sound
- the device scans the radio and analyzes the acoustic spectra of the sound extracts in order to classify them according to musical criteria.
- the device will then compare the classification with the user's preferences and preferably reproduce the stations whose musical theme is appreciated by the user.
- the receiver changes region all the stations of this region are scanned and those corresponding to the musical criteria of the user are added to the internal database.
- This device requires a high computing power and a continuous scanning of the frequencies to keep up to date the classification of the radio stations.
- the present invention allows a user to select broadcast audio content and then allow the device to reproduce other content with a certain auditory similarity.
- the contents are broadcast and are therefore not predictable, which provides a surprise effect to the user in addition to the fact that they are selected according to the tastes of the user.
- the device does not need a sophisticated graphical interface, which allows it a great simplicity of use.
- the computing power used by the device is minimized and the audio classification of each transmitter can easily be updated.
- One of the objects of the present invention is a method for selecting sound contents transmitted on at least one broadcast channel and received at an audio or audiovisual receiver; the method comprising an initial step of reproducing sound content broadcast by a channel, characterized in that the receiver comprises means for iteratively executing the following steps:
- the present invention allows a user to successively reproduce audio contents received for example from a broadcast network while maintaining a certain musical unit or at least some logic.
- the interface with the user can be simple and require only minimal manipulation.
- the search and automatic selection of content gives the user a pleasant surprise effect because he does not know in advance the sound content that will be selected and reproduced.
- the broadcaster calculates once the audio settings avoiding each receiver to do so.
- the method comprises a step of receiving the audio parameters associated with contents received from several broadcast channels. In this way, the receiver can determine which channel is broadcasting the most appropriate audio content.
- the audio parameters of the following content are received by the receiver before the broadcast of this content.
- the selection step is then performed during the broadcast of the previous content or a set of nearby contents is determined following the selection of an initial content by the user. In this way the receiver can anticipate the diffusion of the selected document.
- the anticipation is that the receiver switches to the channel broadcasting the selected content when the broadcast of the selected content begins. In this way, the receiver starts playback exactly as the broadcast of the selected content begins.
- the receiver switches to the channel broadcasting the content selected at the end of the reproduction of the previous content. According to this variant, the priority is given at the end of the contents, this part of the sound content is guaranteed.
- the method comprises a step of introducing by a user of a content selection command, the audio settings of the selected new content being close to that initially selected by the user.
- the selected documents are close to the original document, and the musical types of the selected contents remain very close to the one chosen by the user.
- the audio parameters of the new content selected are close to the one being reproduced. In this way, we can see a certain drift of the musical types of the reproduced contents, which adds a new surprise effect.
- the method comprises a step of memorizing the content selected at the receiver, the reproduction of the selected content occurs at the end of the reproduction of the previous content. In this way, the contents follow one after the other, the beginning of a content occurs just after the end of the previous content.
- the invention also relates to a reproduction apparatus comprising means for receiving sound contents transmitted on at least one broadcast channel; characterized in that it comprises:
- reproduction means for selecting the audio content whose received audio parameters are the closest to previously reproduced content, reproduction means reproducing the newly selected content following the content being reproduced, at least the comparison means, selecting and reproducing automatically, so as to obtain a continuous reproduction of sound contents.
- FIG. 1 is a block diagram of a reproduction apparatus for the implementation of the invention
- FIG. 2 is a table associating for each document in the collection its values of low level parameters
- FIG. 3 represents an explanatory flowchart of the processing of low level parameters according to an exemplary embodiment of the invention
- FIG. 4 represents a chronogram of the events broadcast on different streams and the documents actually reproduced
- FIG. 5 represents a chronogram of the events broadcast on different streams and the documents actually reproduced, using the memorization of audio contents.
- the reception of the audio channels is carried out using a reproduction apparatus as represented in FIG. 1, typically it is an audiovisual receiver 1 associated with a display device 2.
- the receiver comprises a central unit 3 connected to a program memory 12, and an interface 5 for communication with a high-speed local digital bus 6 for receiving information on the broadcast audio contents.
- This network is for example an IEEE 1394 network.
- the receiver can also receive audio and / or video data from a broadcasting network through a reception antenna associated with a demodulator 4, this network can be of the radio, cable or satellite.
- the transmission is unidirectional, ie the receiver 1 has no control over the signals received from this network, nor on the transmitted contents, nor on the broadcast time.
- the receiver further comprises an infrared signal receiver 7 for receiving the signals of a remote control 8, and an audio / video decoding logic 10 for generating the audiovisual signals sent to the television screen 2.
- the remote control 8 is equipped with 1 ⁇ ⁇ , -> and ⁇ - arrow keys and "OK" and "Select" keys.
- the reproduction apparatus 1 is provided with a memory 9 for storing audio contents.
- this memory 9 is made by an integrated circuit several megabytes, thus memorizing a few minutes of audio content.
- the memory 9 is a hard disk of 10 gigabytes for example.
- the storage of one minute of audio content in MP3 occupying about 1 megabytes, such a disc is capable of recording 150 hours of sound content.
- the receiver also includes a circuit 11 for displaying data on the screen, often called OSD circuit, of the English “On Screen Display” (literally meaning "display on the screen”).
- the OSD circuit 11 is a text and graphics generator which makes it possible to display on the screen menus, pictograms or other graphics, and menus informing the user of the accessible audio content.
- the OSD circuit is controlled by the Central Unit 3 and an audio guide.
- the audio guide is advantageously made in the form of a program module stored in the memory 12. It can also be implemented in the form of a specialized circuit of the ASIC type for example.
- the audio contents are transmitted continuously on a plurality of channels the broadcast network, the channels being frequency or digital type. The audio guide allows you to navigate from one channel to another by displaying a menu.
- This menu shows the name of the channel and the title of the audio content being broadcast.
- the user can highlight a title and by pressing "OK” or "Select” he starts the reproduction on the speakers of the audiovisual receiver .
- the audio signals are preferably transmitted in digital form, a variant of broadcasting the analog signals on frequency channels.
- the audio contents are encoded according to a compression standard, MP3 for example, and transmitted coded in packets identified by a header.
- the signals contain data such as the channel identifier, the title of the audio document broadcast, its theme, its duration or end time, and so on.
- the signals also contain the low-level audio parameters characterizing the document.
- Figure 2 shows examples of low level parameter values constituting the descriptors of a number of audio documents.
- the first column of the table shows the title of the audio content, each content is numbered.
- the following columns show the low-level parameter values associated with the document, such as average loudness, tempo, energy, zero crossing rate (or “zerocrossing” in English), brightness (or " brightness "), the envelope, the bandwidth (" bandwidth "in English), the” Loundness ", the cepstral coefficients ...
- the determination of the parameters is carried out by the producer or the broadcaster of audio content this is particularly advantageous because the calculation is done only once for all the receivers 1.
- Each audio content is characterized by its low level parameters, they are transmitted in a carousel for at least the entire duration of the dissemination of the content.
- the reproduction apparatus receives all the low-level parameters of all the audio documents broadcast by all the channels of the broadcast bouquet.
- the audio contents are transmitted over a broadcast network, and the audio parameters over the digital network 6.
- the user can thus ask a server for the continuous transmission of the audio parameters of the documents broadcast over a large number of channels.
- the receiver selects the broadcast channel according to the received parameters of the digital network 6.
- step 3.1 the user selects a channel and reproduces the document being broadcast.
- step 3.2 the audio guide retrieves all the low level parameters of all the contents accessible by the receiver 1.
- step 3.3 the guide thus determines the characteristics of the current document and performs calculations with all other low level parameter groups to determine a level of similarity between the other audio documents and the one being broadcast.
- similarity it must be understood that the audio contents have an acoustic resemblance at the level of the type (vocal, classical instrument, synthesizer, ...), as well as at the level of the rhythm or the sound power.
- the guide selects the audio content that has the greatest similarity with the document being reproduced.
- the guide then waits for the end of the document being reproduced (step 3.4).
- the end of a document is indicated by the broadcaster either by an end signal or by the indication of the duration of diffusion of the document.
- the receiver can automatically detect the end, but the error rate is important.
- the guide selects the channel broadcasting the selected document (step 3.5).
- the characteristics of the channel are in the data associated with the document parameters and its title.
- the audio guide reproduces the document broadcast by the channel and then loops back to step 3.2 in order to determine the new parameters of the currently accessible audio documents. In this way, the user hears a succession of acoustic pieces having strong similarities with the one he selected first.
- the user since the documents are received from unidirectional channels without user control over the choice and timing of the audio content, the user does not know in advance the content broadcast, and even less those selected by the audio guide. . As a result, the audio guide provides a surprise effect to the user.
- One method of determining the level of similarity between audio documents from their low level parameters is to represent the documents by points within a geometric space. Take for example a two-dimensional space, a point Pi of coordinates (xi, yi) represents a sound document Si. The coordinates (xi, yi) are obtained by projection of the point Pi whose coordinates are the values of the low-level descriptors on a sound sample, on a plane. Projection is determined by principal component analysis or PCA. The ACP is notably described in Saporta 1990, entitled "Probability Data Analysis and Statistics, Technip Edition.
- This data analysis algorithm aims to find a subsystem of axes linked by an affine transformation to the original, which "spreads out” the samples at best, these axes tend to confuse the original correlated axes.
- the low-level descriptors are supposed to have a perceptual coherence (the sounds are considered close if and only if the values of the low-level descriptors are close), and the projection being continuous, Sounds considered as close are projected by points close to the screen.
- This example does not exclude representing audio documents within a space with more than two dimensions.
- the coordinates ⁇ Xi, y2, ... zi ⁇ of a point associated with a document in a multidimensional space makes it possible to locate its acoustic content among the other sound documents.
- Figure 4 represents a chronogram of the documents diffused on different flows and actually reproduced.
- the user chooses the audio document broadcast on the channel 1.
- the audio guide determines which document is being broadcast by one of the channels whose audio characteristics are closest to the one currently being played back.
- the guide selects the document 3.2 broadcast by channel 3.
- the receiver switches on the channel 3 in order to reproduce the audio signals coming from this channel.
- the audio guide determines which document is broadcast by one of the channels whose audio characteristics are closest to the document 3.2 being broadcast. The audio guide then selects the document 2.3 broadcast by the channel 2. The receiver 1 then switches to the channel 2 to reproduce the audio signals. And so on, until the user stops the audio guide, and in this case the receiver remains on this channel, or turns off the receiver 1. In the latter case, when the power is turned on The receiver remains on the audio guide function and starts searching for a channel that reproduces a document whose audio characteristics are closest to the one that was played when the power was turned off.
- the audio guide selects and reproduces audio contents close to the content initially selected by the user.
- the audio guide selects a content close to that being reproduced. In this way, over the course of reproductions, the theme of the contents can evolve and deviate from that chosen by the user, which allows a greater variation.
- the low-level parameters are transmitted before reproduction of the associated document, for example one minute before, which makes it possible to anticipate.
- the guide can determine each minute the document that is going to be broadcast and which has a strong similarity with the current one. In this way, the selection process is carried out before the end of the current reproduction.
- the audio guide displays 30 seconds before the title of the content that will be played. Audio documents are transmitted on different channels. Because document durations vary considerably from one to another, beginnings and / or ends can not be synchronized. It is recognized that it is better to cut off the end of a sound document rather than the beginning. According to one improvement, the audio guide chooses to cut the end of the current document to synchronize to the beginning of the next document.
- the guide first selects the audio documents that will begin to be broadcast during the same minute. Then, within this group, the guide selects the document that has the greatest similarity to the audio document being copied or to the document initially selected by the user. Switching the channel broadcasting the current document to the channel broadcasting the selected document occurs when the broadcast of the selected document begins.
- the guide commands a decrease in the sound level in order to simulate the end of the current audio content and thus make more smooth passage from one document to another.
- At least some low-level parameters are calculated at the receiver. For each of the channels that do not broadcast the low level parameters associated with the audio documents, the receiver 1 receives the packets containing the audio signals and extracts the low level parameters therefrom.
- This variant saves the bandwidth of the broadcast network. It also makes it possible to define a bouquet of channels broadcasting audio contents, and to explore only these channels. In return, it requires from the receiver a large computing power.
- the audio guide reproduces the selected document from the received data packets.
- the receiver 1 has two receiving means for receiving the signals from two frequency channels, the means are typically demodulators (TUNER in English).
- a tuner is set to receive the channel broadcasting the current document.
- the second tuner navigates from one frequency channel to another to analyze the audio signals and search for the document whose sounds are closest. Once found, the second Tuner remains tuned to the channel broadcasting the new document that becomes the current one and it is the first tuner that performs the search.
- the audio guide shortly before the end of the current document, typically 10 seconds, performs a sound mix of the two documents by gradually increasing the volume new document while lowering the current document. This mix provides a smooth transition from one document to another.
- the use of a second Tuner makes it possible to extract them while reproducing the current document.
- the receiver uses the memory 9 to temporarily store the audio contents to be reproduced.
- the receiver can introduce a delay of a few seconds to a few minutes between the moment of reception of the audio signals and the moment of their reproductions.
- the receiver can search for other audio documents, select one with similar acoustic characteristics, and start recording.
- the guide extracts the new document from the memory. In this way the synchronization between the reproductions of the two documents is improved. Since both documents are available in the memory 9 of the receiver, the guide can perform a sound mix of the two documents by gradually increasing the volume of the new document while lowering that of the current document.
- Figure 5 shows a timeline of events broadcast on different streams and documents actually reproduced, using the storage of audio contents.
- the user chooses the audio document 1.1 broadcast on channel 1, ending at time T1.
- the audio guide analyzes the various contents broadcast and selects the document 3.2 broadcast by the channel 3 to the moment TT.
- the document 3.1 is stored in the memory 9, the document 1.1 then ends to be reproduced.
- the document 3.1 is read and reproduced. In this way, the memory 9 makes it possible to shift in time a duration (T1-T1 ') the reproduction of the document 3.2.
- the guide searches again for a document whose audio characteristics are closest to the document 3.2.
- the guide determines that it is the document broadcasted by channel 1 at time T2 '. From the moment T2 ', the memory 9 saves the document 1.3 and at the same time provides the data of the document 3.2.
- the guide selects the new document and starts recording. According to an improvement, a few minutes before the end of the reproduction the guide makes a first selection but continues to analyze the different documents broadcast on the different channels.
- the guide first selects the document 2.3. If before the end of the reproduction of the current document, another document appears whose audio characteristics are even closer, then the latter will be recorded instead of the one previously selected.
- document 1.3 takes the place of document 2.3.
- the time difference function can be inhibited and activated using a user command. When enabled, a light is on indicating that the audio is not being played back in real time. As a result, the user knows that the time indications - for example: the tops emitted during the time changes - indicated by the channel do not intervene at the right moment.
- the passage from one document to another is displayed on the screen 2. First the guide displays the document selected by the user.
- the invention also relates to devices that do not have a graphical interface, or a very limited graphical interface, such as a radio player for example. In this case, at first the user zaps from one channel to another and once the broadcast content of one of them pleases him, he is selected and the guide continues to propose a succession of content.
- the invention can also be applied to the selection of content other than audio content: video and audiovisual content, still images, texts, insofar as the appropriate characterization parameters are available. .
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Circuits Of Receivers In General (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0551294A FR2886082A1 (fr) | 2005-05-19 | 2005-05-19 | Procede de selection de contenus sonores recus d'un recepteur audio ou audiovisuel et recepteur selectionnant les contenus selon le procede |
| PCT/EP2006/061721 WO2006122862A1 (fr) | 2005-05-19 | 2006-04-20 | Procede de selection de contenus sonores reçus d'un recepteur audio ou audiovisuel et recepteur selectionnant les contenus selon le procede |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1882323A1 true EP1882323A1 (fr) | 2008-01-30 |
Family
ID=36072203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06754778A Ceased EP1882323A1 (fr) | 2005-05-19 | 2006-04-20 | Procede de selection de contenus sonores reçus d'un recepteur audio ou audiovisuel et recepteur selectionnant les contenus selon le procede |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US8131236B2 (fr) |
| EP (1) | EP1882323A1 (fr) |
| FR (1) | FR2886082A1 (fr) |
| WO (1) | WO2006122862A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101296366B (zh) * | 2007-04-28 | 2011-07-20 | 华为技术有限公司 | 数据管理方法和关联内容管理终端及系统 |
| US20150264599A1 (en) * | 2014-03-12 | 2015-09-17 | Cinet Inc. | Non-intrusive method of sending the transmission configuration information from the transmitter to the receiver |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4499601A (en) * | 1982-10-18 | 1985-02-12 | Matthews Gordon H | Method and apparatus for automatically detecting and playing desired audio segments over a broadcast receiver. |
| DE4103779C2 (de) * | 1991-02-08 | 1995-02-16 | Blaupunkt Werke Gmbh | RDS-Rundfunkempfänger |
| DE4233282A1 (de) * | 1992-10-02 | 1994-04-07 | Becker Autoradio | Verfahren zur Abstimmung eines Rundfunkempfängers unter Verwendung der RDS-Information |
| JPH07297735A (ja) * | 1994-04-27 | 1995-11-10 | Pioneer Electron Corp | 多重放送受信方法及び受信機 |
| DE19502359A1 (de) * | 1995-01-26 | 1996-08-08 | Becker Gmbh | Rundfunkempfänger |
| US6748237B1 (en) * | 2000-06-05 | 2004-06-08 | International Business Machines Corporation | Automated selection of audio broadcast signal source based on user preference criterion |
| US6611678B1 (en) * | 2000-09-29 | 2003-08-26 | Ibm Corporation | Device and method for trainable radio scanning |
| EP1364469A2 (fr) | 2001-02-20 | 2003-11-26 | Caron S. Ellis | Systemes et procedes radio perfectionnes |
| US20020140870A1 (en) * | 2001-03-30 | 2002-10-03 | Koninklijke Philips Electronics N.V. | Entertainment receiver activated in response to received program content and method of operating same |
| US6553077B2 (en) * | 2001-07-31 | 2003-04-22 | Xm Satellite Radio, Inc. | Method and apparatus for customized selection of audio channels |
| US7277877B2 (en) * | 2002-08-14 | 2007-10-02 | Sony Corporation | System and method for selecting a music channel |
| JP2004135169A (ja) * | 2002-10-11 | 2004-04-30 | Fujitsu Ten Ltd | デジタル放送受信装置 |
-
2005
- 2005-05-19 FR FR0551294A patent/FR2886082A1/fr active Pending
-
2006
- 2006-04-20 EP EP06754778A patent/EP1882323A1/fr not_active Ceased
- 2006-04-20 WO PCT/EP2006/061721 patent/WO2006122862A1/fr not_active Ceased
- 2006-04-20 US US11/920,307 patent/US8131236B2/en active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006122862A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2886082A1 (fr) | 2006-11-24 |
| US20090098843A1 (en) | 2009-04-16 |
| WO2006122862A1 (fr) | 2006-11-23 |
| US8131236B2 (en) | 2012-03-06 |
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